On 12/16/2012 1:14 PM, Dennis Lan (dlan) wrote:
Hi
On Sat, Dec 15, 2012 at 6:20 AM, Wolfgang Denk <wd@denx.de mailto:wd@denx.de> wrote:
Dear Vipin Kumar, In message <50CAF0CB.1050108@st.com <mailto:50CAF0CB.1050108@st.com>> you wrote: > ping again pong ;-) > On 12/6/2012 2:52 PM, Vipin KUMAR wrote: > > Certain ARMV7 cpus eg. CortexA9 contains a local and a global timer within the > > CPU core itself. This patch adds generic support for local timer. What would be the use of such timer support? Is there any code that actually needs it, and why does it need anything beyond the existing timer support we have?Hi wolfgang: I think vipin here is trying to provide a generic timer support for ARMV7 architecture, which contains private(local) and global timer. It's general a good thing which means we can maximize the code usage.. Actually I was planing to test the code, but haven't find the time yet ;-)
Hello Wolfgang
Dennis is right. I am trying to provide the armv7 local timer support.
Hi vipin: why you only support local timer(private)? shouldn't it different to support global timer too?
Well, actually the local timer was used in the spear13xx support which is to be added later on. The global timer was not used and hence the driver was not needed (at least by us). but I agree that such a driver would be useful for a lot of people using armv7 cores and CPU timers
The global timer support, even if it is added, would be added as a separate driver so this is infact complete in its own
Regards Vipin